[PATCH] ppc32 8xx: export symbols required for modular IDE

This fixes these warnings:

      Building modules, stage 2.
      MODPOST
    *** Warning: "__ide_mm_insl" [drivers/ide/ide-core.ko] undefined!
    *** Warning: "__ide_mm_outsw" [drivers/ide/ide-core.ko] undefined!
    *** Warning: "__ide_mm_insw" [drivers/ide/ide-core.ko] undefined!
    *** Warning: "__ide_mm_outsl" [drivers/ide/ide-core.ko] undefined!

Signed-off-by: Paul Mackerras <paulus@samba.org>